Which of the following sentences contains a verb in the passive voice ?

i am very fond of my siblings.
in a large vault the diamonds are kept safe.
the carpenter inspected the apprentices work very carefully.
the new students looked rather overwhelmed.

it is the dominance of   the spanish language and roman catholic region in mexico, french being the official language of several african countries, and the existence of a western-style government in south asian countries

the united states presidential election of 1992 was the 52nd quadrennial presidential election. it was held on tuesday, november 3, 1992. democratic governor bill clinton of arkansas defeated incumbent republican president george h. w. bush, independent businessman ross perot of texas, and a number of minor candidates.